UNDERWATER TREASURES Aqua One Betta Duo Aquarium, 5.3-gal - Chewy.com

Underwater Treasures Aqua One Betta Duo Aquarium, 5.3-gal

By Underwater Treasures
Rated 3.5 out of 5 stars

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$139.99Chewy Price

In Stock
FREE 1-3 day shipping

About This Item


  • This 5.3-gallon aquarium features a modern, rimless design.
  • Features three-stage chemical, mechanical and biological filtration.
  • Dual compartments allow you to easily house two betta fish.
  • Comes with a robust 48 individual LEDs as part of a stunning lighting system.
  • Tank separators contain vents for proper water flow and filtration.

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Questions & Answers

3 Customer Questions

Will this system need a heater?
Answer by ChewyOct 19, 2021
A heater is recommended though not included.

Is the separator between the two sides removable?
Answer by ChewyNov 13, 2021
The dividers are not removable.

Is the divider partition in the tank frosted to keep the two betta fish calm?
Answer by ChewyNov 11, 2021
The divider is made of solid black plastic.

ReviewsWrite a Review

Rated 3.5 out of 5 stars
2 Reviews
Would recommend to a friend

2 Customer Reviews

Rated 3 out of 5 stars
By goldal on Sep 15, 2022

Great with some modifications

I've had this rank for over six months so feel I can give it a fair review. The look of the tank is fantastic but there are issues with the filtration. I really tried to fiddle with the items provided to create adequate flow in both sides, but it just didn't work and I had crus building up, and oil sitting on surface. Also the flow contol of the filter is on the bottom side which is a pain to reach if you are trying to adjust flow. Save yourself time and headache and just buy a spray hose connection so water is distributed to both (or all) sections. Once I did the flow valve the tank has been awesome. ****for anyone worried the spray hose will cause too much flow for long fin bettas, I add wood and rock structures and caves so the flow is lessened in their sections and they have placed to go and rest. My bettas actually seem to like riding the flow.

Rated 4 out of 5 stars
By Flightybear on Feb 1, 2022

Great looking tank with horrible pump setup

I absolutely love chewy. I purchased this and within two days I had it! That’s pretty amazing for where I live. After doing lots of searching on glass tanks, I purchased this one. According to some of the questions answered the divider comes out of the center. No it does not it is siliconed in. I am sure it could be cut out, but that chances damage to the tank. After tank set up the tank does look very nice. However the whole pump set up is an absolute nightmare. The lack of directions and material supplied does not allow for the pump to be towards the bottom. I have checked my local hardware store and pet store. I live in a small town and the closest fish store is an hour and 20 minutes away. So I went for the super pet store or the cheap home-improvement store. Neither of which had anything that I could use to set the pump up successfully. I was able to place an online order and in 3-5 days should arrive. If you are using this for a betta it would definitely be best for your fish to stream the pump output across both sides even at the lowest the flow is too much for just one side of the tank. I absolutely love the design, it has a smooth and streamline appearance, I just wish something a little better could’ve been done for that pump.